Springs

81. Sometimes a water- carrying layer comes to the surface, as in hilly land, and water flows out of the ground.

Water flows out of the ground

2. This is called a spring.

83. how much water we can take from a spring depends on how much and how fast the water runs through the water- carrying layer and the slope of the layer.

84. During how much of the year we can take water from a spring depends on how much it has rained and over how big an area it has rained.

85. Some springs give water all year long and some springs give water during only one or two seasons of the year.